Nissan 300ZX Questions

I am new owner !!! However have a problem with the booster. The previous owner did disclose the problem : he had accidentally hit a speed bump and there is now a leak; and there was just not only a spark but a fire bomb out of the left muffler !! Can you fix this ? And estimated cost. Thank you so much !!!

It turns over, its getting fuel, I've checked the coils, they are good, I've cleaned all the ground wire connections, I've replaced the starter relay assembly- no luck..I've pulled the cam tilt actuator it's operational, even swapped it with a known good one..same results,

My anti theft comes on whenever I open the door and the car is locked up. I had the master key but it was lost by a mechanic so I need to know if I have to remove the anti theft to get it going again, or if there is a way to leave it and get her running smoothly again

after engine warmed up, I drive a few blocks when I stop idle drops off and car stalls has to br re-started. I hear the IAAC valve clicking when I checked it. I also replace IAA valve. TPS at .4-.5 volts on. I have a Consult

Checked the clutch reservoir it was empty, top it off and the clutch pedal still stuck to floor after i stepped on it, car hasnt been used for over a month. There was a problem before this ( the temperature gauges keep bouncing and im assuming its the thermometer and now the clutch. What is happening with my car and how much will it cost to get it fixed, help and thank you.

it had been sitting and i started it with out thinking now i am having a hard time starting . it i replaced the fly wheel starter and fuel filter .. i also neeed to know if there is a certain way the drive line goes on . do i need to spin it or something.

I need some help after i changed out my spark plugs on my 1990 nissan 300zx would start just fine but then dies out a little after like it was running out of gas so i canged out my fuel pump and checked the fuel filter nd it still does the same thing. Does anyone know why this is happening?